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26 Montage- und Wartungsanweisung Logamax U122-11 • Ausgabe 05/2005
Änderungen aufgrund technischer Verbesserungen vorbehalten!
Wartung7
7 Wartung
Beachten Sie dazu Kapitel 10.2: "Inspektions- und
Wartungsprotokolle" auf Seite 36.
7.1 Wartungsarbeiten
Vorbereitungsarbeiten
z Anlage stromlos machen.
z Gasabsperrhahn schließen.
z Halteschraube lösen und Verkleidung abnehmen.
z Anlage heizwasser- und warmwasserseitig
absperren und Wasser aus dem Gerät am Füll- und
Entleerhahn ablassen. Nach Beendigung der
Wartungsarbeiten Absperrhähne öffnen, Wasser
nachfüllen und Anlage entlüften.
7.1.1 Wärmetauscher und Brenner reinigen
z Brennerabdeckung abnehmen (Abb. 29).
z Verschraubung zur Gasleitung unterhalb der Boden-
platte der Brennerkammer lösen (Abb. 30, Pos. 1)
z Schrauben links und rechts abschrauben (Abb. 30,
Pos. 2) und Düsenplatte (Abb. 30, Pos. 3)
entnehmen.
Abb. 29 Brennerraumdeckel abnehmen
1
2
10
1
0
1
1
1
K
W
1
0
1
1
0
1
I
0
HINWEIS!
Die hier beschriebene Nassreinigung von
Brenner und Wärmetauscher sollte vorge-
nommen werden, wenn der Gas-Umlauf-
wasserheizer stark verschmutzt ist.
Bei jährlicher Wartung ist es ausreichend,
Brenner und Wärmetauscher in einge-
bautem Zustand mit einer weichen Bürste
zu reinigen. Dazu müssen Brennerabde-
ckungen, Düsenplatte, Elektroden,
Brennerrahmen, Abgasrohr und Strö-
mungssicherung entfernt werden.
Abb. 30 Düsenplatte entfernen
1
2
5
4
3
26


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